Consolidated Statement of Changes in Equity (Unaudited) - 6 months ended Jun. 30, 2016 - USD ($) $ in Millions	Total	Total Partners' Equity	Limited Partners Common Units	Limited Partners Class B Units	General Partner	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Beginning balance at Dec. 31, 2015	$ 24,606	$ 22,881	$ 19,730	$ 771	$ 2,552	$ (172)	$ 1,725
Net income (loss)	2	(40)	(238)	(7)	205	0	42
Other comprehensive income (loss)	77	77	0	0	0	77	0
Cash distributions	(1,231)	(1,231)	(1,001)	0	(230)	0	0
Contributions from general partner	6	6	0	0	6	0	0
Contributions from noncontrolling interests	22	0	0	0	0	0	22
Distributions to noncontrolling interests	(45)	0	0	0	0	0	(45)
Other	13	12	12	0	0	0	1
Net increase (decrease) in equity	(1,156)	(1,176)	(1,227)	(7)	(19)	77	20
Ending balance at Jun. 30, 2016	$ 23,450	$ 21,705	$ 18,503	$ 764	$ 2,533	$ (95)	$ 1,745